Estimation in Division Problems

The video tutorial covers Unit 7 Lesson 16, focusing on using estimation to solve division problems with two-digit divisors. The teacher explains the concept of estimation, provides examples, and applies it to word problems. Students are encouraged to practice using estimation to make division easier and more efficient.

What is the primary purpose of using estimation in division with two-digit divisors?

• To make the division process faster and more efficient

• To avoid using multiplication

• To eliminate the need for subtraction

• To ensure the division is always exact

When estimating the division of 154 by 22, which number is used for rounding the divisor?

• 25

• 20

• 30

• 15

In the example of dividing 503 by 68, why was the initial estimate of 8 too high?

• Because 68 is closer to 60 than 70

• Because 8 is not a factor of 68

• Because the divisor was rounded incorrectly

• Because the estimate was based on incorrect multiplication

What is the result of dividing 2583 by 41 using estimation?

• 63

• 64

• 65

• 62

How does the teacher suggest verifying the result of a division problem?

• By adding the divisor to the quotient

• By multiplying the quotient by the divisor and adding the remainder

• By subtracting the remainder from the dividend

• By dividing the quotient by the divisor again

In the word problem about oranges, what is the first step in solving how many crates are needed?

• Subtract the number of crates from the total oranges

• Multiply the total oranges by the number of crates

• Divide the total oranges by the number of oranges per crate

• Add the total oranges to the number of crates

What was the mistake made during the verification of the orange crate problem?

• Incorrect multiplication of the divisor

• Incorrect estimation of the quotient

• Incorrect subtraction of the dividend

• Incorrect addition of the remainder

In the skateboard problem, what estimation is used for the divisor 76?

• 70

• 75

• 80

• 85

How many skateboards were sold if the total sales were $5396 and each skateboard costs $76?

• 71

• 69

• 70

• 72

What is the key takeaway from using estimation in division problems?

• Estimation eliminates the need for checking work

• Estimation helps in quickly finding a close answer

• Estimation is only useful for small numbers

• Estimation always gives the exact answer